Drier



2 Sheets Sh et 1.

(No Model G. P. ROBINSON.

DRIER.

No. 256,503. Patented Apr. 18,1882

'lhngmphsr, Washinginn. n. c.

(No Model.)

2 Sheets-Sheet 2;

G. E. ROBINSON.

DRIER...

v Patented Apr. 18 .12 5

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p UNITE STATES PATENT OFFICE, 1

DRIER.

SPECIFICATION forming-part of Letters Patent No. 25 ,503, dated April 18, 1882. Application filed January 3, 1882. (N0 model.)

To all whom it may concern:

Be it known that I, GEORGE F. ROBINSON, residing at Chicago, in the county of Cook and State of Illinois, and a citizen of the United States, have invented new and useful Improvements in Driers,of which the following'is a full description, reference being had to the ac-. companying drawings, in which Figure l is a top view. Fig. 2 is a vertical cross-section at line so of Fig. 1. Fig. 3 is a vertical longitudinal section taken at line 3 of Fig. 2, looking to the right, showing the shafts B O, with holes therein for the arms I) c, which, to prevent confusion, are not shown. Fig. 4 is an elevation showing one end.

The object of my invention is to provide for efl'ectu all y and rapidly dryin g semi-fluid m att er such as distillers slop and glucose refuseand also grain and other things.

My invention consists essentially in the combination, with a drying-chamber, of a series of rocking shafts provided with arms, arranged in the manner hereinafter described, whereby the material to be dried will bythe movement of the shafts and arms be agitated and fed.

The invention also consists in the combination, with a drying-chamber, of a series of rockin g hollow shafts provided with tubes or arms and connecting-tubes, for the purpose of permitting a circulation of steam through the tubes and agitating the material while being dried.

The inventionembraces other features, all of which will be fully hereinafter described in detail, and specifically set forth in the claims.

In the drawings, A represents a case the walls of which are double, the chamber within the inner wall being, for ordinary purposes, about fourteen feet long, seven feet wide, and

40 of any suitable height-say from twelve to sixteen feet, or more. This chamber is open at the top; but the space between the two walls is covered. The bottom of the case and chamber is inclined, and at the bottom of the incline is an opening, 00, extending the length of the chamber, through which the dried material can be discharged into a suitable conveye'r, which is not shown.

The case may be located in any suitable part of a building, and is to be supported at a suitable distance above the floor inany suitable manner. I

B are shafts, which aresupported in bear-fings in the end walls of the case A, so that they have a partial rotary motioii.

O are tubes about three inches in' diameterfi They are supported also in bearin gs in the end Walls of the caseA, and also can have a partial rotary motion. The ends of these tubes O [project a little beyond the outer walls of the GEORGE F. noninsornor CHICAGO, ILLINOIS.

ends of the case A. I place a number of these shafts B above the tubes 0, on each side of the chamber D, within the case A, as shown in Fig. 2. b are a. nnmberof arms, one end of which is .secured in a shaft, B, the other end being free.

0 are other arms similar to the arms b,-except that they, 0, are tubes, the free ends of which are closed, the other end being properly secured in one of the tubes 0. The arms and tubes b 0 upon one side of the chamber pass in between the arms andtubes b cupon the oppo-- site side. The arms I) may be about one-fourthof an inch apart, or the distance may be greater if necessary, while the arms or tubes 0 may be nearer together. The ends of the tubes Gare connected at one end of the case by horizontal tubes d, and at the opposite end by short vertical tubes e, the connections being such as not to interfere with the partial rotation of such tubes 0; and also such that steam being admitted to one of the tubes (l-t'or example, at f-can circulate through all the tubes 0, and valso through the connections 61 e. Steam can also pass from the tubes 0 into the small tubesc.

Beneath each double series of arms I) and tubes 0, I place a shaft, E, upon which such arms b and 0 rest. These shafts E are to be either eccentrically supported or eccentric in form, and by their rotation a slight movement will be given to the arms I) 0, their free ends rising a little above and falling a little below the horizontal. These shafts E may be driven in any suitable manner for example, by means of gear wheels, one of which, F, is shown.

devices I do not show, but any skilled mechanic can construct them.

g are inlets for hot air, which may be driven through the chambers D while the drying process is going on.

his an inlet for steam into the space between the two walls of the chamber D.

t is the outlet for such steam.

In use I admit steam between the walls ot the case and maintain a circulation of steam through the pipes O, and also force hot air into the chamber D.

The operation is as follows: The material to be dried is to be delivered or placed upon the upper surfaces of the upper tier or series of arms, b, from which it will fall onto the several series of arms I) 0, one after another, passing gradually from the top to the bottom, being thoroughly dried by the hot air and by the heat from the steam. While the drying process is going on the shafts E'should be rotated for the purpose of agitating the material and causing it to fall from one series of arms to another; but it' the devices which drive these shafts E are properly constructed, one or more of these shafts E, either at the top or the bottom, may be stopped. This may be desirable to allow material to accumulate upon the upper series of arms or to arrest its delivcry from the lower series. This can be accomplished either by means of loose pulleys or clutch-pinions.

l f necessary, suitable supports may be provided for the shafts B and tubes 0, and also for the shafts In at or near the center thereof.

The moisture from the dried material may be conducted to the open air in any suitable manner.

The shafts B might be made hollow, the same as the tubes (J, and steam could he passed into them as desired, and the arms b mightbe hollow.

A leading feature of my invention is the series of arms I) c for receiving, agitating, and delivering the material from one series to another; and the operation ofthese is the same, whether both steam and hot air be used, as described, or whether steam or hot air only be used for drying.

The parts which have been described as the tubes 0 are in fact hollow rocking shafts.

As shown in the drawings, the shafts E are round, but are pivoted eccentrically.

What I claim as new, and desire to secure by Letters Patent, is as follows:

1. In combination with a drying-chamber,

a series of rocking shafts provided with arms, arranged substantially as described, whereby the material to be dried will by the movement of the shafts and arms be agitated and fed, substantially as specified. 2. In combination with a drying-chamber, a series of rocking hollow shafts, (3, provided with tubes or arms 0, arranged substantially as described, and connecting-tubes d e, for the purpose of permitting a circulation of steam through the tubes and agitating the material while being dried, substantially as specified.

3. In combination with a drying-chamber, a series of shafts provided with arms, arranged substantially as described, and shafts E, for the purpose of agitating the material being dried, and permitting it to fall from the arms by the movement of such arms, substantially as set forth.

GEORGE F. ROBINSON.

Witnesses:

E. A. WEsT, ALBERT H. ADAMS. 

